Did Mary Lincoln need committal?

[L Verge]

Having watched a grandmother live to the age of 91 and a mother to the age of 94, I can say with certainty that having money to support oneself in old age is a major worry for many - especially widows.

I just wish that a historian somewhere would give a clear answer on how much pressure Mary Isham LIncoln, Robert's wife, brought to bear on him to get his mother out of the spotlight.